Wheel-brake.



No; 650,228. Patented May 22, I900. G. CATTANEO.

WHEEL BRAKE.

(Application filed. Oct. 28, 1899.)

3 Sheets-Shoat ("0- Model.)

witnesses; M4

I 21 ue 21/150 r:

m: NORRIS Pmas o0. PNOTOUTNO WASKINUIOR u. c.

Patented May 22, I900.

3 Sheets-Sheet 2,

- G. CATTANED. WHEEL B AKE. (Application filed 66c. 25, 1899.)

(No llbdl.)

witnesses:

No. 650,228. Patented May 22, I900.

G. CATTANEO. WHEEL BRAKE. (Ayplication filed 001;. 28, 1899.)

(No Model.) I

I 8 SheetsSheet 3 Tn: uonms PETERS c0 PnoTo-Lrma, WASHINGTON, u. c.

INITED "STATES PATENT GIQAOOHINO CAT'JIANEO, on GENOA, ITALY.

' i j st eamlines forming are of Letters Patent 1\To.650,28,datd may 22, 1960.

Application filed October 28, 1899'. Serial No. 735,113. (No model.)

To all tiih'o'iit it may concern:

Be it known that I, GIoAooHINo CATTANEO, a subject of the King of Italy, residing at 5 Via Aparott-i, Genoa, Italy, have invented certain new and useful Improvements in Wheel= Brakes; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention refers to brakes for cycles, motor-cars, and all descriptions of carriages whose wheels are fitted with india-rubber tires.

The drawings annexed to this specification show my improved brake acting on the front wheel of a bicycle; but the same may as well be caused to act upon the rear wheel thereof or upon the wheels of any other vehicles, specially those fitted with india-rubber tires, like motor-cars, &c.

Figures 1 and 2 are respectively a side elevation and a section on line X Y, Fig. 1, of a brake applied to the front wheel of an ordinary bicycle. Figs. 3 and 4 refer to modified forms of the revolving roller.

In said drawings, ashows the steering-tube, b the front fork, and c the tire of the front wheel. The sector-shaped box (Z, wherein the rubbing blocks 9 are seated, is connected through the pivot s to the brake-rod Z, which latter can be pressed downward against the tire, as in the ordinary bicycles, and automatically released by a spring. (Not shown in the drawings, as its arrangement does not differ from those in common use.) Pin 0 is carried by a double crank-lever m h, whose arm m is pivoted at r on the collar n, while arm h, fitted with screw-threads on its upper extremity, goes through the box d. On pin 0 is mounted, by means of two ball-bearings, roller c f, whose lateral parts 6 are intended to come into contact with the rubbing-blocks g, while the middle part f, which can be eas ily exchanged, is intended to press against the tire 0. Nuts i and lock-nuts q, acting through the springs 19, admit of the initial pressure exerted by the rubbing-blocks g on the roller sides 6 being controlled at will. In order to obtain the desired result, the adherence between fand 0 must be greater than that existing between e and g. To that effect a free control is left both on the initial pres sure between B and g, which may be varied at will by nuts 2' and lock-nuts q indepencb ently of the extra pressure exerted by the brake=rod l, as well as on the choice of the material and the degree of smoothness of the surfaces which are intended to come into 0011- tact with each other.

The middle part f of the revolving roller may be made of rubber, leather, metal, or any other convenient material and may also be fitted with indentations, corrugations, and the like, (see Fig. 3,) or so shaped as to embrace the tire in cross-section, as shown by Fig. 4, all of these arrangements being intended to cause the revolving roller to strictly adhere to the tire. The rubbing-blocks 9 may on their turn be made of wood, leather, or other substances chosen with the view of obtaining less adherence between them and the lateral parts e of the revolving roller than that which arises between f and 0. Under. these circumstances, the cycle being in 1110- tion, the brake-rod Z being pressed down, the initial pressure between e and 9 being properly controlled and being increased by the amount of the pressure exerted by the revolving roller on the wheel-tire, the middle part f of the roller e f will roll on the tire without slipping, while the side ends eof the roller will slide along thebrake-blocks g and be acted upon by their braking action, which will be transferred indirectly to the tire, no slipping taking place along the contact-line of the tire c and revolving roller f.

Having thus described my invention and how the same is to be put into practice, what I desire to claim and protect by Letters Patout isr 1. In a brake of the character described, the combination of a brake-rod, a yoke connected to the brake-rod and having an aperture in each extremity, a roller adapted to engage the tire by its middle portion, a pair of levers having said roller journaled between them, the free extremity of each of said levers projecting through one of said apertures in said yoke, anut on the free end of each of said projecting extremities, a spring between each of said nuts and the yoke, blocks mount ed on said yoke, one on each side of its middle portion and adapted to bear on the roller on each side of its tire-engaging portion, and meansfor guiding said roller to and from'the tire, substantially as set forth.

2. In a brake of the character described, the combination of a brake-rod, a yoke connected to the brake-rod and having an aperture in each extremity, a roller having an enlarged middle portion adapted to engage the. tire, a pair of levers having said roller jour; naled between them, a free extremity of each of said levers projectingthrough one of said apertures in said yoke, 'a-nut on the freeend of each of said projecting ertrernities, "a spring between each said nut and the yoke, blocks mounted on said yoke, one on each side of. its enlarged middle portion and adaptedto bear on the roller on each side of said enlarged middle portion, and means for guid: ing said. rollerito and from the tire,substan tially as set forth.

3.. In a brake of the character described,

the combination of a brake-rod, 'a yoke conneeted tothe brakerod and having an aperture in each extremity, a roller adapted to en gage the tire by its middle portion, a pair of 25 levers having said roller journaled between them, the free extremity of each of said levers projecting "through one of said apertures in said yoke, a jam-nut on the free end of each of said projectingextremities, a spiral spring 6 surrounding each of said extremities and being interposed between said jam-nuts and said y0ke,blocks mounted on said yoke, one on each side of its said middle portion and adapt n ed; to bear on the roller on each side of its said 35 'my signature 

